Question

valency of 30 elements.....​

Answer 1

$\begin{array}{| c | c | c |}\cline{1-3} \bf Atomic\:No. & \bf Elements & \bf Valency \\ \cline{1-3} 1 &\sf Hydrogen & 1 \\ \cline{1-3} 2 &\sf Helium & 0 \\ \cline{1-3} 3 &\sf Lithium & 1 \\ \cline{1-3} 4 &\sf Berrylium & 2 \\ \cline{1-3} 5 &\sf Boron & 3 \\ \cline{1-3} 6 &\sf Carbon & 4 \\ \cline{1-3} 7 &\sf Nitrogen & 3 \\ \cline{1-3} 8 &\sf Oxygen & 2 \\ \cline{1-3} 9 &\sf Flourine & 1 \\ \cline{1-3} 10 &\sf Neon & 0 \\ \cline{1-3} 11 &\sf Sodium & 1 \\ \cline{1-3} 12 &\sf Magnesium & 2 \\ \cline{1-3} 13 &\sf Aluminium & 3 \\ \cline{1-3} 14 &\sf Silicon & 4 \\ \cline{1-3} 15 &\sf Phosphorus & 3 \\ \cline{1-3} 16 &\sf Sulphur & 2 \\ \cline{1-3} 17 &\sf Chlorine & 1 \\ \cline{1-3} 18 &\sf Argon & 0 \\ \cline{1-3} 19 &\sf Potassium & 1 \\ \cline{1-3} 20 &\sf Calcium & 2 \\ \cline{1-3} 21 &\sf Scandium & 3 \\ \cline{1-3} 22 &\sf Titanium & 4 \\ \cline{1-3} 23 &\sf Vanadium & 5,4 \\ \cline{1-3} 24 &\sf Chromium & 2 \\ \cline{1-3} 25 &\sf Manganese & 7,4,2 \\ \cline{1-3} 26 &\sf Iron & 2,3 \\ \cline{1-3} 27 &\sf Nickel & 3,2 \\ \cline{1-3} 28 &\sf Cobalt & 2 \\ \cline{1-3} 29 &\sf Copper & 2,1 \\ \cline{1-3} 30 &\sf Zinc & 2 \\ \cline{1-3}\end{array}$

Answer 2

${\bigstar}<strong><u>SOLUTION</u></strong>{\bigstar}$

❏ Valency of Hydrogen ➡ 1

❏ Valency of Helium ➡ 0

❏ Valency of Lithium ➡ 1

❏ Valency of Beryllium ➡ 2

❏ Valency of Boron ➡ 3

❏ Valency of Carbon ➡ 4

❏ Valency of Nitrogen ➡ 3

❏ Valency of Oxygen ➡ 2

❏ Valency of Fluorine ➡ 1

❏ Valency of Neon ➡ 0

❏ Valency of Sodium (Na) ➡ 1

❏ Valency of Magnesium (Mg) ➡ 2

❏ Valency of Aluminium ➡ 3

❏ Valency of Silicon ➡ 4

❏ Valency of Phosphorus ➡ 3

❏ Valency of Sulphur ➡ 2

❏ Valency of Chlorine ➡ 1

❏ Valency of Argon ➡ 0

❏ Valency of Potassium (K) ➡ 1

❏ Valency of Calcium ➡ 2

❏ Valency of Scandium ➡ 3

❏ Valency of Titanium ➡ 4

❏ Valency of Vanadium ➡ 5,4

❏ Valency of Chromium ➡ 2

❏ Valency of Manganese ➡ 7, 4, 2

❏ Valency of Iron (Fe) ➡ 2, 3

❏ Valency of Cobalt ➡ 3, 2

❏ Valency of Nickel ➡ 2

❏ Valency of Copper (Cu) ➡ 2, 1

❏ Valency of Zinc ➡ 2

Thank you.